Default Int Values

You need a ";" after all the:

         Massey_Week3_InvoiceItem1 item3 = new Massey_Week3_InvoiceItem1() ;

lines

You can't have more than on emain method

lines 6, 17, etc

err...you also can't have more than one main method in the same class

OK, obviouly I need to rewrite the whole program.

You need to parameterize the main method so you can do what you intend

And you really want a collection of objects to hold items. Perhaps you can tell me exactly what you want to achieve?

Create 3 invoice items, (I have 4 possibly for extra credit:) using InvoiceItem.
Print out a header line
Print out the 3 (4) invoice item lines
Print out the total cost of the invoice

New and improved version, but still not compiling:

public class Massey_Week3_CreateInvoice1
{
      public static void main(String[] args)
      {

            Massey_Week3_InvoiceItem1 item1 = new Massey_Week3_InvoiceItem1("20239", "Coors Light", 10.00f);
            Massey_Week3_InvoiceItem2 item2 = new Massey_Week3_InvoiceItem2("20052", "Coors Original", 11.00f);
            Massey_Week3_InvoiceItem3 item3 = new Massey_Week3_InvoiceItem3("20151", "Killians Irish Red", 12.00f);
            Massey_Week3_InvoiceItem4 item4 = new Massey_Week3_InvoiceItem4("20024", "Keystone Ice", 13.00f);

            System.err.println("Item 1: " + item1.toString());
            System.err.println("Item 2: " + item2.toString());
        System.err.println("Item 3: " + item3.toString());
        System.err.println("Item 4: " + item4.toString());

        float totalPrice = item1.getItemPrice() + item2.getItemPrice() + item3.getItemPrice() + item4.getItemPrice();
            System.err.println("Total value: $" + totalPrice);
      }

}

>>Massey_Week3_InvoiceItem1

Is a class name. You only need one class, but four instances. Call it

Massey_Week3_InvoiceItem

and do

Massey_Week3_InvoiceItem item1 = new Massey_Week3_InvoiceItem("20239", "Coors Light", 10.00f);

...

Save this to file elsewhere as Massey_Week3_CreateInvoice1.java. It should get you started.



public class Massey_Week3_CreateInvoice1 {

      public static void main(String[] args) {

            Massey_Week3_InvoiceItem item1 = new Massey_Week3_InvoiceItem("20239", "Coors Light", 10.00f);
            Massey_Week3_InvoiceItem item2 = new Massey_Week3_InvoiceItem("20052", "Coors Original", 11.00f);
            Massey_Week3_InvoiceItem item3 = new Massey_Week3_InvoiceItem("20151", "Killians Irish Red", 12.00f);
            Massey_Week3_InvoiceItem item4 = new Massey_Week3_InvoiceItem("20024", "Keystone Ice", 13.00f);

            System.err.println("Item 1: " + item1.toString());
            System.err.println("Item 2: " + item2.toString());
            System.err.println("Item 3: " + item3.toString());
            System.err.println("Item 4: " + item4.toString());

            float totalPrice = item1.getItemPrice() + item2.getItemPrice() + item3.getItemPrice() + item4.getItemPrice();
            System.err.println("Total value: $" + totalPrice);
      }

}

class Massey_Week3_InvoiceItem {

      public Massey_Week3_InvoiceItem(String s1, String s2, float f1) {
            // unimplemented
      }

      public int getItemPrice() {
            //dummy
            return 100;
      }

      public String toString() {
            return "Dummy!";
      }

}

OK, here we go.  I have almost figured it out, but I still have 1 error message.  I have to put the two programs together to get the desired results....duhhh!  OK, here is what I have now....

////////////////////////////////////////////////////////////////////////////
//
// File:     Massey_Week3_CreateInvoice1.java
//
// Project:  POS406
//
// Purpose:  Create Invoice
//
// Comments: Version 1 is what I would turn in if this were an assignment
//
// Author:   Amy Massey
//
///////////////////////////////////////////////////////////////////////////
public class Massey_Week3_InvoiceItem1
{

      private int itemNum = 0;
        private String itemName = "";
         private int itemQuantity = 1;
      private float itemPrice = 0.0f;
      private float totalPrice = 0.0f;


public void setItemNum(int valueIn)
{
    itemNum = valueIn;
    return;
         }
         public int getItemNum()
         {
    return itemNum;
}

public void setItemName(String valueIn)
{
     itemName = valueIn;
     return;
          }
          public String getItemName()
          {
     return itemName;
}

public void setItemQuantity(int valueIn)
{
     itemQuantity = valueIn;
     return;
          }
          public int getItemQuantity()
          {
     return itemQuantity;
}

public void setItemPrice(float valueIn)
{
       itemPrice = valueIn;
       return;
       }
       public float getItemPrice()
       {
       return itemPrice;
}

public void setTotalPrice(float valueIn)
{
      totalPrice = valueIn;
      return;
      }
      public float getTotalPrice()
      {
      return totalPrice;
}

public Massey_Week3_InvoiceItem1()
{
      setItemNum(0);
    setItemName("");
    setItemQuantity(1);
      setItemPrice(0.0f);
      setTotalPrice(0.0f);

    return;
}

public Massey_Week3_InvoiceItem1(int itemNumIn, String itemNameIn, int itemQuantityIn, float itemPriceIn, float totalPriceIn)
{
    setItemNum(itemNumIn);
    setItemName(itemNameIn);
    setItemQuantity(itemQuantityIn);
      setItemPrice(itemPriceIn);
      setTotalPrice(totalPriceIn);

       return;
      }

public class Massey_Week3_CreateInvoice1
{
      public static void main(String[] args)
      {

            Massey_Week3_InvoiceItem1 item1 = new Massey_Week3_InvoiceItem1("20239", "Coors Light", 1, 10.00f);
            Massey_Week3_InvoiceItem1 item2 = new Massey_Week3_InvoiceItem1("20052", "Coors Original", 1, 11.00f);
            Massey_Week3_InvoiceItem1 item3 = new Massey_Week3_InvoiceItem1("20151", "Killians Irish Red", 1, 12.00f);
            Massey_Week3_InvoiceItem1 item4 = new Massey_Week3_InvoiceItem1("20024", "Keystone Ice", 1, 13.00f);

            System.err.println("Item 1: " + item1.toString());
            System.err.println("Item 2: " + item2.toString());
        System.err.println("Item 3: " + item3.toString());
        System.err.println("Item 4: " + item4.toString());

        float totalPrice = item1.getItemPrice() + item2.getItemPrice() + item3.getItemPrice() + item4.getItemPrice();
            System.err.println("Total value: $" + totalPrice);
      }

}

>>public class Massey_Week3_InvoiceItem1

remove 'public' from the above

OK, now we have run into 5 more errors...
lines 102, 103, 104, 105...cannot resolve symbol...ahhhh! the ^ in under "new"

and line 99 inner classes cannot have static declarations.  any ideas on what I am doing wrong?

Awesome!  Thanks a million, no a billion!

:-) Don't forget to implement the constructor. The following:

>>
public Massey_Week3_InvoiceItem1()
{
     setItemNum(0);
    setItemName("");
    setItemQuantity(1);
     setItemPrice(0.0f);
     setTotalPrice(0.0f);

}
>>

is redundant as

a. Java supplies the empty constructor
b. Java zeroes out values automatically

...although i see

setItemQuantity(1);

so that does alter things if you want to set that

I will set that back to 0, and thanks for all your help with this!  I really, really appreciate it!